|View single post by Huw Griffiths|
|Posted: Tue Dec 22nd, 2009 12:41 am||
This was the crux of the problem-to allow the axles free enough movement to conform on a curve, and yet try to keep them from "hunting" on the straight.
All of this stuff is of great interest to me, for a couple of reasons.
I've mentioned about the Hornby model of a Class 142 "Pacer" railbus.
What I forgot to mention was that, in some parts of the UK, the real things became known as "skippers" or "nodding donkeys" - these names are actually far too polite, as they are notorious for poor ride quality.
This isn't helped by the fact that they run in pairs - so, even if one of them actually wants to run properly, it gets pulled out of true by its partner in crime.
I don't know who had the "brainwave" of putting pairs of hacked-about Leyland National bus bodies onto rough 4 wheel chassis - and thrashing the resulting contraptions along the same tracks as proper trains. All I do know is that I wish they'd keep their "bright ideas" to themselves in future.
Class 142s are also notorious because their wheels start squealing loudly the moment the things go anywhere near a curve. This is unfortunate - as they are often used in hilly areas, with lots of tight curves. They might look pretty, but you can hear them coming!
In the former East Germany, I believe that some 4 wheel railbuses acquired a nickname which roughly translates to "piglet taxi" - while their "modern" British equivalents just seem to squeal like pigs. I've been told this is called progress.
In view of my obvious dislike for Class 142s, you might wonder why I'm so keen to build a model of a Wismar railbus. Well, I'm not planning on (ab)using it in the same way as the real 142s. I'd just like to see 1 railcar trundling along sedately every now and then - maybe even just sat quietly somewhere - so I can look at it and think: "I built that". Strange perhaps, but I just like the way they look.
Personal opinions aside, the real reason this stuff interests me is that I'd like to avoid the problems that have been flagged in this thread - but I don't have space for large radius curves. I think I might be working on "test hacks" before I even start on a model. I'm glad I enjoy technical challenges.
Last edited on Tue Dec 15th, 2015 11:18 am by Huw Griffiths